Grate.



PATENTED SEPT. 18, 1906.

W. MOCLAVE.

GRATE.

APPLIUATION 11.51) NOV. 4, 1905.

'2 SHEETS-SHEET 1.

PATENTBD SEPT. 18, 1906.

w. OG AVE, GRATE.

APPLICATION FILED NOV. 4, '1905 Wan" . I m I I Q WILLIAM 'MocLAvn, 10F SCRANTON, PENNSYLVANIA. ass-non;

McOLAVE-BROOKS COMPANY, A CORPORATION or k VANIA.

(sh/ATE. f

, Specification of Letters Patent.

Patented Sept. raises.

Application filed November 4. 1905. Serial No. 285.900.

and useful'lmprovem ents in Grates; and I do hereby declare the following to be a full, clear, and exact-description of the invention, such as will enable others skilled in the art to "which it appertains to make and use the same.

This invention relates to improvements in grates, and particularly to rocking grates, which are pivotally mounted or journaled in a combustion-chamber of a furnace in Such a manner that they are capable of being rocked for dumping the material thereon into the ash-pit.

It is the .object of the invention to provide a grate in which rocking bars may he used, the said barsti'pping only in one direction for dumping materials from the grate-surface, their edges being so shaped asto be capable of moving one upon the other to some extent to permitof the expansion of the bars'under great heat and yet not interfere with their being rocked for dumping the materials into the ash-pit, nor to materially interfere with the free use of firemens cleaning implements, such as slash-bars, hoes, &c., when in normal position.

It is the further object of the invention to provide a rocking. grate-bar with fuel-supporting portions or caps having noses which match and fit u on the noses of adjacent caps to. prevent t e running through of fuel and to provide means for rocking the bars in one direction and adjustable means for controlling the return of the bars and prevent them from pounding one upon the other.

With these and further objects in view the invention comprises certain novel constructions, combinations, and arrangements of parts, as will be hereinafter fully described and claimed. I

In the accompanying drawings, Fi ure 1 is a vertical sectiona view through the combustion-chamber of the furnace, showing my improved rate mechanism applied therein, the bars of one section thereof being rocked to their dumping positions. Fig. 2 is a top plan view of a portion of the gratee'surface, showing parts of adjacent grate;bar caps.

Fig. 3 is an enlarged vertical sectional view through ad acent bars and their fuol--supportfaces. Fig. 5 is a similar View, but showing the noses of the cap rounded where thcyiap but showing the caps riding slightly upon each other, as where they have been expanded and'forced together when not controlled by the adjustable controlling means on the boiler-- front. Fig. 7 is a similar View, but showing the caps expanded by heat, but so adjusted by the controlling means that the bars cannot strike each other and that an air-space will be maintained between the edges of the caps. Fig. 8 is a detail view showing adjacent'edges of grate-bars, the said edges hav-- ing'lapping faces arranged in approximately horizontal planes. Fig. 9 is a detail scctionai view showing the set-screws for engaging the stub-levers.

The present invention is designed l)il!](lppllly for use in the burning of exceedingly composed of rocking grate-bros formed with quite small mesh, so that very fine anthracite fuels cannot run through the same. For the same reason the bars are made wit h a very i small'space between the rocking-pornous.

Rocking grate-bars have usually been made so that they can rock in both directions, and this is found useful in handling soft or il'liii'" minous coal and-anthracite coals, except the very smallest grades. in forming a rocking grate for the fuels commonlyio use it gene? 1 ally sufficient to bring the edges of the adjacent bars within a uartcr of an inch of each other, and the fire will not run through. When, however, the very small grades of an thracite fuel are burned upon the grate, ,opening of the size of a quarter of an inn: is usually too large and wili militate against the general efficiency of the. whole grate, principally because small coal sifts through. be tween the bars, and where a forced draftis .used the air rushes through these lines of least resistance with such force to tear e bed of small anthracite fuel badly. -11r11iceting these difficulties and in supplying the need for the grate upon which very small anthracite fuel can be burned to advantage, I provide a rocking dump-grate in which-the ing caps. ig. 4 is a detail view showing the noses of ad acent caps formed with lllGillleti e anthracite fuels and for that reason one upon the other. Fig. 6 is a sin'iiiar view,

bass are is of looking oniy a certain dis- I tei'ioe ihm .s, snffioientlv for to dump the ashes and clinhermi'ter which they are brought to 2; levels" in; By; oonstmoting those bars 5 so that th oan iffifiii in on one direction the mesh or space between t em can be reduced to a minimum Without cletril'nent to tho furnace and. by my invention in such a manner that no obstruction will be offered tof so a, hoe when ine! from one part of the grate to another.

In the sosompanying iliustmtion' I have:

shown at si e moeiisnism embodying the .o my instention, in 1 indioaztes guts-hams winch are Estimated at their ends the tomatoes st s time in desired men not, (usual? its j ooiinalebeaaing bars") :stnd s oh l oo-rs is psovided with asoohetod The said body portions 2 J so ai-intions, which I shall term oops, ,ss .3, the said caps having downorejoo'ting shanks i, which fit into sets in the body portion 2 as oieairly in Figs. 1 3. The said caps one i w ti: o hood 5 and lateral projeot img 5, Whieh hove latersliy extend- 1 7, as elear'ly shown'in 2 :mndi

oo-"tion S, and pnoiecting beyond said 4 are toethor progieotions Qtmd M9;

9 at one end of the bar aresrrong ed h: 1' point of the tie portions 8 v teeth i st ot ei end of the cap, so 'hen the sdjooent ends-oi oapsupon-ad vest boss meet, so shown in Fig. 3, the

9 Will isp snd overhang the teeth 21" smiseo of the tieeosrs adjacent s important, siiiee it permits of the rs sutiioiently close toto secure s spsoe or mesh between nion ii-no anthracite fuel oping ashes fiiom ths-ir es into the ash-pit beef t oth 9 upon outdo psraiiel with the mes of the sdisoent teeth 10 so that t -o tooth may be and yet leave a s at walls between. them, 3 end i. As shown t e up or edges of the tie s1 or curved to ishoe or other move- The I and up-povsurfooes of the i A depressions between the oops o adjacent bars over which her Implement may be easily lug the fuel upon the grate-sur- 2o ohservod that when the caps wed titted at the edge with still be tip ed or rocked with respect to iiifivhl he formation of tho teeth 5 mid '10 and.

l "it: other the extension and to their perfect horizontal alinenient, as when originally placed the grate. This is ind-i.-

csted by the position of the oops shown in' Fig. wit relation to the loiiginwl gIQi-WSRE iiaoe, as indicated by the dottsd iine in this position it will be observed :t h meeting ges {the afiord no obst; tion or projection upon the grate over which the has cannot be drown ing the tool place \to plow, and also be observed that the w sts-bows y other tor. umping the mito s Instead of rounding the mops-r e ges tho tie portions 8 they may be made with isomers, v

extended atomoot mono or toss up or snnfeoe of the oops. This Wil permit of the advantages above stats-d with respeot .to the oops shown in 8 and 6. 'As-shown in Fig. .5, :a shoot '1 resuit be obtained by teaming the upper suite-so o? the tie port-ionsi l and 12 of odjsoenv e s the upper inclined tacos of the teed-h be J with wounded surfaces 2811161 teeth 13 and 14 with-owed under surfisees, the under sm' faoes of the teeth mode to fit closely upon the our-vo of the upper POE- tion of the teeth M and of the '12 becoming ,sufioiently expanded to drive the parts :togothoii.

. of course the tie-bars 8 and 11 and 1:2 might be extended in the plaoe of the teeth 9,, to, 13, and 14, it is prefers-hie to torn: the tooth upon the said tie-baits by moons of hosts or slots 1.5. @how-n in the ncl of the oops in 2.) This not on ssrves to break up w 1st Wouid otherwise be .a double line of metal, nest to the othei", exposed to the heat the esp odgss, t also sitords suliioient opportunity to "3 '3 up wardl-y through 'the ond of i o (3&1): even when they sure dniwen other, as illustrated in Figs. 5 and As shown Fig. 8, thoispping surfaces of the edges of the bars be sntstnged in epproximately horizontal planes. As shown in this View, the adj-scent edges of the fuelsupponting portions of the bars ore depressed by curving or rounding them downwardly, as at 27 and 28. Ext ending beyond the rounded depressed pontiqn 27 of one bar at one edge is a projeotion 29, having .a horizontal upper surface :30. The sdjsoent sdge of the next bar is formed with a horizontal lapheat and depr ploy in a grate-surface and also lights the structure of the grate, since a less number of loody portions have to supplied and journaled in the grate structure. The structure of the grate is exceedingly simple, and yet 1 the mesh'or air-feeding; spaces formed in the grate-surface he reduced to an} size necessary for handling the smallest grades of anthracite fuel.

Having now described my invention, What i claim as new, and desire to secure by Letters Patent, is-

i. A grate having a fuel-hearing surface composed of caps formed with double-beveled edges, the said double perinitting of the movement of one edge over the other in the ezmsnsion of the grate-hers.

2. A grate ech'enisin, coin irising rocking liars provided with depending edges silapted to overlap the of adjacent hare, the ineeting-point of said edges being below the grste-surl'ece.

3. A grate mechanism, comprising roclo ing hers, formed n' i the meeting edges or so. i caps being inclined to lap one upon the othel d ride upon each other when expanded under the action of d portions formed at said to permit of tli lapping; of the caps and yet not oiie-r ohstrnction to the movement of implement-s noon the grate.

i. A grate mechanism, coinp'-"is.ig rocking having iuel-snpportin; caps and projecting teeth at the edges of caps cs.- pabic of lapping upon the clips of the adjacent her, the said lapping portion having an inclined face opposed to the st r'lecc otthc adjacent her. i

cl'zcnism, composed rock porting cans,

incline-c (1m nc 1 1-. '3 .1 ace tnoicol tilu ed upon tir edge of said e1r-spsces he rocking you es lrom the top cop extemling i the. l s "p ling cl thev may lap n permittii unucr the action oi heat without makinglarge initial spaces between the caps, and Wi hout ofihrin oh .1 xtion to the movement of h opor the grate-surface, when in normal position.

4 A ,il'tiff i clmnisni. comprising reci ng grate-harsh incl-simporting cans, the cages oi the clips being ileprcr ml r id ill-- (lined at an angle with res-pm "to i l nolsnrface cl illfi: can and im nting pro ections carried inf the edges all the amps hating inclincil eting sin aces for llucilitnting the .iLL.

incl-supporting cops,

cnt than the ii the caps caps, the teeth at one end of each cap being lower than. those at the other end to permit of the lapping; of the teeth of adjacent bars and means-controlling the extent of movement of bars, to preserve a space between the said lapping teeth. K

9. A grate mechanism, comprising rocking cars having" their meeting edges fitting upon each other and capable of riding one upcnthe other under the expansion of the bars and adjustable means upon the furnace-front for mint-rolling the extent to which the spaces between the meeting edges of the bars are closed.

10. A mechanism, comprising rocking grate-he rs having inclined lapping edges, rods corn ed with the said bars fol-rocking them, the said rods extending outside the furnace, levers for reciprocating said rods and adjustable stops for engaging said levers and limiting the extent oi the movement of the liars toward each other.

11. A grate mecwnisin, continrising rockare having caps fonned Withei'lge teeth, said. teeth having surfaces capable of fitting upon and lapping over the surface of the teeth of adjacent here, means for rocking the bars and a ilStLlJlB means on the furnaceiront for limiting the movement of the bars when returned to their normal positions.

12. A grate mechanism, comprising roclq ing grate-hars having hollow bo ly portions and removable hiel supporting caps, the said. cops being provided with laterally-extending Webs, tie-bars at the edges of the caps and teeth lrojecting therefrom having inclined ssriaces fitting one upon the other to facilitate the riding of the teeth of one bar upon those of the adjacent bill under the expansion oi 1o caps.

rate mechanism, comprising rocking liars, having renwvahle inel-engeging caps, the said (iilpS being formed with shanks for engaging the body portions of the bars and l l'illlY-BXtOlllli g Webs having incl-sun porting" teeth pi'oicc ing therefrom, tie poo tions for strengthening the edges of the cops and teeth projecting from the tie portions and having inclined faces depressed below the upper surface of the caps and means for limiting the extent to Which the l teeth of adjacent billS approach each other.

i l. ratcmechanism comprising recliing our: 'lllflilwfltll fuel-engaging portions fnmieil ith edges arranged to lap upon the edges of adjacent lHLIS, the said edges being depressed below the grate snrface to facilitate the use cl a hoe. upon the gtatc.

15. A grate mechanism, comprising a reels ing grate-bar having fuel-supporting caps .and projecting teeth formed upon the edges of the caps capable of lapping upon the teeth of adjacent caps, the upper edges of said 5 teeth being turned downwardly to form depressions between the grate-bars 16. A ate mechanism comprising rocking grateare having inclined lapping edges,

rods connected with said bars for rocking the same, means outside of the furnace for recip- 1o rocating said rods and means for regulating the movement of said rods.

In testimony whereof I aifix my signature in presence of two witnesses.

. WILLIAM MCOLAVE.

Witnesses:

JOHN L. FLETCHER, CASSELL SEVERANCE. 

